unwrap.array {R.utils} | R Documentation |
Unwrap an array, matrix or a vector to an array of more dimensions. This is done by splitting up each dimension into several dimension based on the names of that dimension.
## S3 method for class 'array': unwrap(x, split=rep("[.]", length(dim(x))), drop=FALSE, ...)
x |
An array or a matrix . |
split |
A list or a character vector .
If a list , it should contain function s that takes a character
vector as the first argument and optional ... arguments.
Each function should split the vector into a list of same length
and where all elements contains the same number of parts.
If a character vector , each element split[i] is replaced by
a function call
function(names, ...) strsplit(names, split=split[i]) .
|
drop |
If TRUE , dimensions of of length one are dropped, otherwise not. |
... |
Arguments passed to the split function s. |
Although not tested thoroughly, unwrap()
should be the inverse
of wrap()
such that identical(unwrap(wrap(x)), x)
holds.
Returns an array
.
Henrik Bengtsson (http://www.braju.com/R/)
*wrap()
.
## Not run: See ?wrap.array for an example